Of 6,390 sampled OS departures, 61.1% left 15 minutes or more behind schedule. Average lateness was 23.3 minutes. Sample window: Oct 19, 2025 to Oct 17, 2026. Its published schedule has about 214 flights a week on 19 routes.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Nov 2025 | 400 | 61.0% | 23.5 min |
| Dec 2025 | 397 | 69.0% | 26.7 min |
| Jan 2026 | 196 | 67.9% | 34.8 min |
| Feb 2026 | 222 | 53.2% | 23.2 min |
| Mar 2026 | 416 | 42.6% | 14.1 min |
| Apr 2026 | 363 | 53.4% | 20.0 min |
| May 2026 | 869 | 49.8% | 17.4 min |
| Jun 2026 | 492 | 64.4% | 27.4 min |
| Jul 2026 | 766 | 70.4% | 26.7 min |
| Aug 2026 | 907 | 64.7% | 25.1 min |
| Sep 2026 | 797 | 65.1% | 23.5 min |
| Oct 2026 | 455 | 65.3% | 23.1 min |
| Departure airport | Departures sampled | Late | Average lateness |
|---|---|---|---|
| Frankfurt International Airport (FRA) | 834 | 83.8% | 30.9 min |
| Düsseldorf International Airport (DUS) | 603 | 47.1% | 19.2 min |
| Kastrup (CPH) | 560 | 50.5% | 17.2 min |
| Charles De Gaulle (CDG) | 547 | 72.4% | 27.9 min |
| Schiphol (AMS) | 528 | 68.0% | 25.0 min |
| Vienna International (VIE) | 523 | 43.0% | 15.3 min |
| Hamburg Airport (HAM) | 502 | 45.2% | 18.0 min |
| Arlanda (ARN) | 393 | 45.6% | 18.6 min |
| Brussels Airport (BRU) | 392 | 68.4% | 23.6 min |
| Washington Dulles International (IAD) | 206 | 67.5% | 26.0 min |
GET /flight_delays filtered by airline_iata=OS returns the flights delayed at this moment: flight number, scheduled and actual times and minutes of delay.
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